Perhaps you should try some spelling variations:
doing von » ing von
wang yang » wang yan, wang liang, wang yanling
doing un » doing und, doing our, doing _
yang jin » yang jie, yang jun, ying jin
a brain » _ brain
yan jiu » yang jie, pang jiu
long du » long d, long do, long run
e a » et a

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((doing un) OR (doing von))) OR (wang yang)) e a brain ((yan jiu) OR (yang jin)) long du ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((doing un) OR (doing von))) or (wang yang)) e a brain ((yan jiu) or (yang jin)) long du ;~".
• Adding a wildcard symbol may retrieve word variants: ((((doing un) OR (doing von))) or (wang yang)) e a brain ((yan jiu) or (yang jin)) long du ;*.